Nonlinear losses in photoconductive Yb:YAG laser materials: identification of photocarrier properties by non-steady-state photoEMF |
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| Authors: | N Korneev P Rodriguez-Montero U Wolters K Petermann G Huber |
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| Institution: | 1. Instituto Nacional de Astrofísica, óptica y Electrónica, Apdo. Postal 51 y 216, CP 72000, Puebla, Mexico
2. Institut für Laser-Physik, Universit?t Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
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| Abstract: | We report on the investigation of the photocarrier sign and the excitation dynamics in Yb:YAG at 940 nm excitation wavelength by non-steady-state photo-electromotive force technique. Annealed crystals with 25 and 50 % Yb-doping concentration demonstrate hole conductivity, while 80 % Yb:YAG displays electron conductivity. A characteristic relaxation time of approximately 1 ms is observed, which corresponds to the lifetime of the excited Yb3+-ion. |
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